Galatians 3:4

“Have ye suffered so many things in vain? etc..] These Galatians had suffered great reproach, many afflictions and persecutions for the sake of the Gospel, as all that embrace it must expect to do; and which to them that persevere in the faith of the Gospel will not be in vain, they will be followed with eternal life and glory; not that these things are meritorious of such happiness, or deserve such a reward; the reward of them is not of debt, but of grace. But, if such who have made a profession, and have suffered for it, should after all relinquish it, their sufferings for it are in vain; they will come short of that glory which is promised to them that suffer for righteousness sake: and…”

“Have ye suffered so many things--namely, persecution from Jews and from unbelieving fellow countrymen, incited by the Jews, at the time of your conversion. in vain--fruitlessly, needlessly, since ye might have avoided them by professing Judaism [GROTIUS]. Or, shall ye, by falling from grace, lose the reward promised for all your sufferings, so that they shall be "in vain" (Gal 4:11; Co1 15:2, Co1 15:17-19, Co1 15:29-32; Th2 1:5-7; Jo2 1:8)? yet--rather, "If it be really (or 'indeed') in vain" [ELLICOTT]. "If, as it must be, what I have said, 'in vain,' is really the fact" [ALFORD]. I prefer understanding it as a mitigation of the preceding words. I hope better things of you, for I trust you…”

“Have ye suffered so many things in vain? - Paul reminds them of what they had endured on account of their attachment to Christianity. He assures them, that if the opinions on account of which they had suffered were false, then their sufferings had been in vain. They were of no use to them - for what advantage was it to suffer for a false opinion? The opinions for which they had suffered had not been these which they now embraced. They were not those connected with the observance of the Jewish rites. They had suffered on account of their having embraced the gospel, the system of justification by a crucified Redeemer; and now, if those sentiments were wrong, why, their sufferings had been…”

“Have ye suffered - Both from the zealous Jews and from the heathens. So many things - For adhering to the gospel. In vain - So as to lose all the blessings which ye might have obtained, by enduring to the end. If it be yet in vain - As if he had said, I hope better things, even that ye will endure to the end. Galatians 3:5”

“3:4 Have you experienced (or suffered) so much for nothing? This could refer to suffering, but what is known about the Galatian church does not suggest this. Paul was probably referring to the spiritual experiences the Galatians had through the Holy Spirit (Gal 3:3, 5). Turning to the law for right standing with God would mean regarding the work of the Spirit as meaningless.”

“ye: Eze 18:24; Heb 6:4-6, Heb 10:32-39; Pe2 2:20-22; Jo2 1:8 so many: or, so great Galatians 3:5”